DOWNEY -- A 20-year-old Downey woman on a hike in Eaton Canyon was forced to call for help yesterday after her dog collapsed from possible heat stroke.

Temperatures in Pasadena reached a high of 99 yesterday when rescuers received a distress call from the woman, whose boxer canine became disoriented and unable to hold down water.

The woman, whose name was not released, called L.A. County firefighters, who dispatched rescuers to her location.

The Altadena Mountain Rescue Team was first to arrive and loaded "Tyson" into their air-conditioned truck and drove him to the trail's parking lot. Tyson eventually recovered after 30 minutes of cooling off.

After an assessment by the Pasadena Humane Society, he was allowed to go home with his owner.